CN111147473A - Network message forwarding method, device and system - Google Patents
Network message forwarding method, device and system Download PDFInfo
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- CN111147473A CN111147473A CN201911337094.0A CN201911337094A CN111147473A CN 111147473 A CN111147473 A CN 111147473A CN 201911337094 A CN201911337094 A CN 201911337094A CN 111147473 A CN111147473 A CN 111147473A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/563—Data redirection of data network streams
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Abstract
The application provides a method, a device and a system for forwarding a network message, wherein the method comprises the following steps: determining network message characteristics of the network message; matching the network message characteristics with abnormal message characteristics in a redirection rule set; and if the network message characteristic is successfully matched with an abnormal message characteristic, executing processing operation on the network message according to the processing action corresponding to the abnormal message characteristic. The invention determines the network message characteristics after analyzing the network message, and matches the network message characteristics with the abnormal message characteristics in the redirection rule set; if the network message characteristic is successfully matched with an abnormal message characteristic, the network message is indicated to be an abnormal message, so that the network message is processed according to the processing action corresponding to the abnormal message characteristic to redirect the abnormal message, thereby protecting and avoiding forwarding faults of the virtual network equipment and improving the reliability of the cloud computing virtual network environment.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, and a system for forwarding a network packet.
Background
A cloud computing virtual network environment has many virtual network devices. With the development of the cloud computing virtual network environment, more and more tenants rent virtual network devices are used in the cloud computing virtual network environment. The virtual network device processes more and more tenant network messages and has more and more complex processing logic.
In a cloud computing virtual network environment, a virtual network device often receives an abnormal network message, and the received abnormal network message affects the virtual network device or a subsequent virtual network device, so that the virtual network device or the subsequent virtual network device has a forwarding fault.
Therefore, a processing strategy for abnormal network messages is needed so as to improve the reliability of the cloud computing virtual network environment.
Disclosure of Invention
In view of this, the present application provides a method, an apparatus, and a system for forwarding a network packet, which can execute a processing operation according to a corresponding rule for an abnormal network packet, avoid a forwarding fault of a virtual network device, and improve the reliability of a cloud computing virtual network environment.
In order to achieve the above object, the present invention provides the following technical features:
a method for forwarding a network message includes:
determining network message characteristics of the network message;
matching the network message characteristics with abnormal message characteristics in a redirection rule set;
and if the network message characteristic is successfully matched with an abnormal message characteristic, executing processing operation on the network message according to the processing action corresponding to the abnormal message characteristic.
Optionally, the determining the network packet characteristics of the network packet includes:
obtaining the analysis result of the network message; the analysis result comprises tunnel information, tunnel inner layer information and tunnel outer layer information;
and determining the tunnel information, the tunnel inner layer information and the tunnel outer layer information as network message characteristics.
Optionally, before matching the network packet feature with the abnormal packet feature in the redirection rule set, the method further includes:
storing a redirection rule set, the redirection rule set comprising one or more redirection rules;
one redirection rule comprises an abnormal message characteristic and a processing action corresponding to an abnormal network message;
the set of redirection rules is updated periodically.
Optionally, the abnormal packet characteristics include tunnel information, tunnel inner layer information, and tunnel outer layer information of the abnormal network packet;
the processing acts include: modifying the specified field of the abnormal network message, discarding the abnormal network message or adding a specified label in the abnormal network message.
Optionally, before matching the network packet feature with the abnormal packet feature in the redirection rule set, the method further includes:
judging whether the redirection rule set is an empty set or not;
and if the redirection rule set is not an empty set, the step of matching the network message characteristics with the abnormal message characteristics in the redirection rule set is carried out.
Optionally, the method further includes:
and if the redirection rule set is an empty set or the matching of the network message characteristics and the abnormal message characteristics in the redirection rule set fails, determining that the network message is a normal network message, and executing normal forwarding operation.
Optionally, the matching the network packet characteristics with the abnormal packet characteristics in the redirection rule set includes:
matching the network message characteristics with abnormal message characteristics in a redirection rule set by adopting an accurate matching strategy;
and matching the network message characteristics with the abnormal message characteristics in the redirection rule set by adopting a fuzzy matching strategy.
An apparatus for forwarding a network packet, comprising:
a determining unit, configured to determine a network packet characteristic of a network packet;
the matching unit is used for matching the network message characteristics with the abnormal message characteristics in the redirection rule set;
and the processing unit is used for executing processing operation on the network message according to the processing action corresponding to the abnormal message characteristic if the network message characteristic is successfully matched with the abnormal message characteristic.
A virtual network device, the virtual network device integrated software modules comprising: the message analysis module, the forwarding module and the redirection module are arranged on the message analysis module and the forwarding module;
the redirection module is used for determining the network message characteristics of the network message; matching the network message characteristics with abnormal message characteristics in a redirection rule set; and if the network message characteristic is successfully matched with an abnormal message characteristic, executing processing operation on the network message according to the processing action corresponding to the abnormal message characteristic.
A system for forwarding network messages, comprising:
a transmitting device, a virtual network device and a receiving device;
the virtual network equipment is used for determining the network message characteristics of the network message; matching the network message characteristics with abnormal message characteristics in a redirection rule set; and if the network message characteristic is successfully matched with an abnormal message characteristic, executing processing operation on the network message according to the processing action corresponding to the abnormal message characteristic.
Through the technical means, the following beneficial effects can be realized:
the invention determines the network message characteristics after analyzing the network message, and matches the network message characteristics with the abnormal message characteristics in the redirection rule set; if the network message characteristic is successfully matched with an abnormal message characteristic, the network message is indicated to be an abnormal message, so that the network message is processed according to the processing action corresponding to the abnormal message characteristic to redirect the abnormal message, thereby protecting and avoiding forwarding faults of the virtual network equipment and improving the reliability of the cloud computing virtual network environment.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a network packet forwarding system disclosed in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a virtual network device disclosed in an embodiment of the present application;
fig. 3 is a flowchart of a network packet forwarding method disclosed in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a forwarding apparatus for network packets disclosed in an embodiment of the present application;
fig. 5 is a schematic structural diagram of another network packet forwarding device disclosed in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
To facilitate those skilled in the art to understand the system structure of the present application, the present invention provides a forwarding system for network packets, which is shown in fig. 1 and includes:
a transmitting device 100, a virtual network device 200, and a receiving device 300.
It is understood that there are one or more virtual network devices between the sending device 100 and the receiving device 300, the number of the virtual network devices 200 in the illustration may be determined according to an actual application scenario, and the number of the virtual network devices 200 is not limited in this application.
The present application provides a virtual network device, and referring to fig. 2, a software module of the virtual network device may include: the system comprises a message analysis module 201, a redirection module 202, a forwarding module 203, a problem module 204 and a sending module 205.
In this embodiment, a redirection module 202 is added between the message parsing module 201 and the forwarding module 203, so as to identify an abnormal message and redirect the abnormal message, thereby protecting and avoiding a forwarding fault of the virtual network device, and improving the reliability of the cloud computing virtual network environment.
The present application provides a forwarding method of a network packet, which is applied to a virtual network device in a forwarding system of a network packet shown in fig. 1, and in particular, is applied to a redirection module shown in fig. 2.
Referring to fig. 3, a method for forwarding a network packet includes the following steps:
step S300: a set of redirection rules is stored.
Wherein the redirection rule set comprises one or more redirection rules; one redirection rule comprises an abnormal message characteristic and a processing action corresponding to an abnormal network message.
Under the condition that the virtual network equipment is found to have abnormal forwarding, an automatic mode or a manual mode can be adopted to collect abnormal messages, then the characteristics of the abnormal messages are extracted, and corresponding processing actions are set according to the specific conditions of the abnormal messages after targeted analysis.
And the abnormal message characteristics and the processing actions form a redirection rule, and the redirection rule is added to the redirection rule set. It will be appreciated that a redirection rule in the set of redirection rules may be deleted if the redirection rule is no longer applicable.
The abnormal message characteristics comprise tunnel information, tunnel inner layer information and tunnel outer layer information of the abnormal network message; the processing acts include: modifying the specified field of the abnormal network message, discarding the abnormal network message or adding a specified label in the abnormal network message.
For example, the destination IP address of the abnormal network message is wrong, in which case the processing action is to modify the destination IP address in the abnormal network message to be the correct destination IP address.
And omitting a certain layer of protocol label from the abnormal network message, wherein the processing action is used for adding a specified label to the abnormal network message. For example, a label of the L2 layer protocol is added.
The abnormal network message is an attack message sent by a network hacker, and the processing action is used for discarding the abnormal network message under the condition.
It is to be understood that the specific processing action is related to the specific situation of the network packet, and the application is not limited thereto.
It can be understood that in the case of an abnormal packet, the redirection rule set is not an empty set; and under the condition that the abnormal message does not exist, the redirection rule set is an empty set. The redirection rule set may be periodically updated to continually update the redirection rule set. E.g., adding new redirection rules, deleting redirection rules that are no longer applicable.
Step S301: network packet characteristics of the network packet are determined.
The message analysis module analyzes the network message and obtains an analysis result, the message analysis module sends the analysis result to the redirection module, and the redirection module obtains the analysis result of the network message; the analysis result comprises tunnel information, tunnel inner layer information and tunnel outer layer information; and determining the tunnel information, the tunnel inner layer information and the tunnel outer layer information as the network message characteristics.
Step S302: and judging whether the redirection rule set is an empty set, if so, entering the step S303, and if not, entering the step S304.
Step S303: and determining that the network message is a normal network message, and executing normal forwarding operation.
And under the condition that the redirection rule set is an empty set, indicating that no abnormal message exists temporarily, determining that the received network message is a normal network message, and executing normal forwarding operation.
Step S304: and matching the network message characteristics with the abnormal message characteristics in the redirection rule set. If the matching fails, the process proceeds to step S303, and if the matching succeeds, the process proceeds to step S305.
Matching the network message characteristics with abnormal message characteristics in a redirection rule set by adopting an accurate matching strategy; or, matching the network message characteristics with the abnormal message characteristics in the redirection rule set by adopting a fuzzy matching strategy.
If the matching between the abnormal message feature in the redirection rule set and the network message feature fails, it indicates that the network message is not an abnormal message, so step S303 is entered to execute a normal forwarding operation.
If the abnormal message characteristic in the redirection rule set is successfully matched with the network message characteristic, the network message is indicated to be an abnormal message, and the redirection operation is carried out.
Step S305: and if the network message characteristic is successfully matched with an abnormal message characteristic, executing processing operation on the network message according to the processing action corresponding to the abnormal message characteristic.
And determining a processing action corresponding to the abnormal message characteristic from the redirection rule set, and processing the network message according to the processing action.
A specific embodiment of a redirection rule set is provided below, where the redirection rule set is implemented using a redirection rule table, which is detailed in the following table:
redirection rules table
Action table 1
Action table 2
| Pointer with a movable finger | Processing actions |
| 10 | Discard operations； |
Through the technical means, the following beneficial effects can be realized:
the invention determines the network message characteristics after analyzing the network message, and matches the network message characteristics with the abnormal message characteristics in the redirection rule set; if the network message characteristic is successfully matched with an abnormal message characteristic, the network message is indicated to be an abnormal message, so that the network message is processed according to the processing action corresponding to the abnormal message characteristic to redirect the abnormal message, thereby protecting and avoiding forwarding faults of the virtual network equipment and improving the reliability of the cloud computing virtual network environment.
Corresponding to the forwarding method of the network packet shown in fig. 3, a forwarding apparatus of the network packet is provided, and with reference to fig. 4, the forwarding apparatus includes:
a determining unit 41, configured to determine a network packet characteristic of a network packet;
a matching unit 42, configured to match the network packet feature with an abnormal packet feature in a redirection rule set;
and the processing unit 43 is configured to, if the network packet feature is successfully matched with an abnormal packet feature, perform a processing operation on the network packet according to a processing action corresponding to the abnormal packet feature.
Wherein the determining unit 41 determines the network packet characteristics of the network packet, including:
obtaining the analysis result of the network message; the analysis result comprises tunnel information, tunnel inner layer information and tunnel outer layer information; and determining the tunnel information, the tunnel inner layer information and the tunnel outer layer information as network message characteristics.
Optionally, referring to fig. 5, before the matching unit 42 matches the network packet feature with the abnormal packet feature in the redirection rule set, the forwarding apparatus for the network packet further includes:
a storage unit 44, configured to store a redirection rule set, where the redirection rule set includes one or more redirection rules; one redirection rule comprises an abnormal message characteristic and a processing action corresponding to an abnormal network message;
an updating unit 45, configured to periodically update the redirection rule set.
The abnormal message characteristics comprise tunnel information, tunnel inner layer information and tunnel outer layer information of the abnormal network message; the processing acts include: modifying the specified field of the abnormal network message, discarding the abnormal network message or adding a specified label in the abnormal network message.
Optionally, before the matching unit 42 matches the network packet feature with the abnormal packet feature in the redirection rule set, the method further includes:
a judging unit 46, configured to judge whether the redirection rule set is an empty set;
if the redirection rule set is not an empty set, the network packet features are matched with the abnormal packet features in the redirection rule set by the matching unit 42.
A normal forwarding unit 47, configured to determine that the network packet is a normal network packet if the redirection rule set is an empty set, or if matching between the network packet characteristics and the abnormal packet characteristics in the redirection rule set fails, and execute a normal forwarding operation.
The matching unit 42 matches the network packet features with the abnormal packet features in the redirection rule set, including:
matching the network message characteristics with abnormal message characteristics in a redirection rule set by adopting an accurate matching strategy;
and matching the network message characteristics with the abnormal message characteristics in the redirection rule set by adopting a fuzzy matching strategy.
For specific implementation of the forwarding apparatus of the network packet, reference may be made to the embodiment shown in fig. 3, which is not described herein again.
A specific embodiment of a redirection rule set is provided below, where the redirection rule set is implemented using a redirection rule table, which is detailed in the following table:
redirection rules table
Action table 1
Action table 2
| Pointer with a movable finger | Processing actions |
| 10 | Discarding operation; |
through the technical means, the following beneficial effects can be realized:
the invention determines the network message characteristics after analyzing the network message, and matches the network message characteristics with the abnormal message characteristics in the redirection rule set; if the network message characteristic is successfully matched with an abnormal message characteristic, the network message is indicated to be an abnormal message, so that the network message is processed according to the processing action corresponding to the abnormal message characteristic to redirect the abnormal message, thereby protecting and avoiding forwarding faults of the virtual network equipment and improving the reliability of the cloud computing virtual network environment.
The functions described in the method of the present embodiment, if implemented in the form of software functional units and sold or used as independent products, may be stored in a storage medium readable by a computing device. Based on such understanding, part of the contribution to the prior art of the embodiments of the present application or part of the technical solution may be embodied in the form of a software product stored in a storage medium and including several instructions for causing a computing device (which may be a personal computer, a server, a mobile computing device or a network device) to execute all or part of the steps of the method described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for forwarding a network message is characterized by comprising the following steps:
determining network message characteristics of the network message;
matching the network message characteristics with abnormal message characteristics in a redirection rule set;
and if the network message characteristic is successfully matched with an abnormal message characteristic, executing processing operation on the network message according to the processing action corresponding to the abnormal message characteristic.
2. The method of claim 1, wherein the determining network packet characteristics of the network packet comprises:
obtaining the analysis result of the network message; the analysis result comprises tunnel information, tunnel inner layer information and tunnel outer layer information;
and determining the tunnel information, the tunnel inner layer information and the tunnel outer layer information as network message characteristics.
3. The method of claim 1, wherein prior to matching the network packet characteristics with abnormal packet characteristics in a redirection rule set, further comprising:
storing a redirection rule set, the redirection rule set comprising one or more redirection rules;
one redirection rule comprises an abnormal message characteristic and a processing action corresponding to an abnormal network message;
the set of redirection rules is updated periodically.
4. The method of claim 2,
the abnormal message characteristics comprise tunnel information, tunnel inner layer information and tunnel outer layer information of the abnormal network message;
the processing acts include: modifying the specified field of the abnormal network message, discarding the abnormal network message or adding a specified label in the abnormal network message.
5. The method of claim 1, wherein prior to matching the network packet characteristics with abnormal packet characteristics in a redirection rule set, further comprising:
judging whether the redirection rule set is an empty set or not;
and if the redirection rule set is not an empty set, the step of matching the network message characteristics with the abnormal message characteristics in the redirection rule set is carried out.
6. The method of claim 5, further comprising:
and if the redirection rule set is an empty set or the matching of the network message characteristics and the abnormal message characteristics in the redirection rule set fails, determining that the network message is a normal network message, and executing normal forwarding operation.
7. The method of claim 1, wherein matching the network packet characteristics to abnormal packet characteristics in a redirection rule set comprises:
matching the network message characteristics with abnormal message characteristics in a redirection rule set by adopting an accurate matching strategy;
and matching the network message characteristics with the abnormal message characteristics in the redirection rule set by adopting a fuzzy matching strategy.
8. An apparatus for forwarding a network packet, comprising:
a determining unit, configured to determine a network packet characteristic of a network packet;
the matching unit is used for matching the network message characteristics with the abnormal message characteristics in the redirection rule set;
and the processing unit is used for executing processing operation on the network message according to the processing action corresponding to the abnormal message characteristic if the network message characteristic is successfully matched with the abnormal message characteristic.
9. A virtual network device, wherein the virtual network device integrated software module may comprise: the message analysis module, the forwarding module and the redirection module are arranged on the message analysis module and the forwarding module;
the redirection module is used for determining the network message characteristics of the network message; matching the network message characteristics with abnormal message characteristics in a redirection rule set; and if the network message characteristic is successfully matched with an abnormal message characteristic, executing processing operation on the network message according to the processing action corresponding to the abnormal message characteristic.
10. A system for forwarding network packets, comprising:
a transmitting device, a virtual network device and a receiving device;
the virtual network equipment is used for determining the network message characteristics of the network message; matching the network message characteristics with abnormal message characteristics in a redirection rule set; and if the network message characteristic is successfully matched with an abnormal message characteristic, executing processing operation on the network message according to the processing action corresponding to the abnormal message characteristic.
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| CN201911337094.0A CN111147473A (en) | 2019-12-23 | 2019-12-23 | Network message forwarding method, device and system |
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| CN201911337094.0A CN111147473A (en) | 2019-12-23 | 2019-12-23 | Network message forwarding method, device and system |
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